No one, not a mother, father or child, should have to deal with domestic violence in the home. It's a devastating situation to deal with, and it's harmful physically and psychologically.
Any relationship that has domestic violence as a factor is likely volatile and difficult to handle. When the possibility of a divorce comes up, the offender may become more violent or aggressive in an attempt to control the victim.
You're afraid, to put it simply. Afraid for your safety. Afraid for your kids. Afraid they'll witness another fight and another black eye.